Zenon theme change the width of the widget

You’ll need to change the CSS code for the main section and the sidebar. But to do so, you need to use a Child Theme or custom CSS plug-in. Once you have that set up, add this code:

.single_wrap {
    width: 662px;
}

#sidebar {
    width: 315px;
}

Change the widths according to what you want. But you’ll also then need to change the width of the widgets — otherwise they will not fit in the sidebar:

#sidebar .widgets .widget {
    width: 283px;
}

Thanks for the help.

When I trying to activate the child theme, I got tih error message:
Warning: require_once(/home/bandi/public_html/bandi.hu/cashflow/wp-content/themes/zenon-lite-child/admin/options-framework.php) [function.require-once]: failed to open stream: No such file or directory in /home/bandi/public_html/bandi.hu/cashflow/wp-content/themes/zenon-lite/functions.php on line 420

Fatal error: require_once() [function.require]: Failed opening required ‘/home/bandi/public_html/bandi.hu/cashflow/wp-content/themes/zenon-lite-child/admin/options-framework.php’ (include_path=’.:/usr/lib/php:/usr/local/lib/php’) in /home/bandi/public_html/bandi.hu/cashflow/wp-content/themes/zenon-lite/functions.php on line 420

But, the Custom CSS Manager was perfect for it.

Your code was helpful, but not perfect, and I found what else need to change for the best result.

Here is my custom css:

.single_wrap {
    width: 712px;
}

.single_post {
    width: 712px;
}

#sidebar {
    width: 245px;
}

#sidebar .widgets .widget {
    width: 213px;
}

#sidebar .widgettitle, #sidebar .widgettitle a{
    width: 228px;
}

Very very big thank you, for your help!!!

Great job!